Liquid-fuel apparatus



June 24, 1930. A. LANSER 1,766,133

LIQUID FUEL APPARATUS Filed Aug. 10, 1929 Patented June 24, 1930 6UNITED- STATES PATENT OFFICE ALFRED YLANSER, OF GORSEAUX-VEVEY,SWITZERLAND LIQUID-FUEL APPARATUS Application filed August 10, 1929.Serial No. 385,033.

My invention relates to heating installations utilizing liquidcombustibles and particularly heavy 011s.

The invention has for an object to improve installations of the typeindicated so that they operate in a way superior to those known in theprior art.

' The invention consists essentially with a view to preventing theoperation of the atomizer and consequently the burner except when thecombustible has been transformed into a state which produces the bestspray thereof and hence perfect operation of the burner and at the sametime to have recourse to a heatingmeans for the said combustiblecontrolled by a thermostatic apparatus, in providing the atomizer with ameans such as a by-pass and to control said by-pass by an elementsubjected to the pressure existingm the feeding zone of the atomizer andsubj eating to the control of a thermostat placed under the influence ofthe temperature of the combustible in the said feeding zone, theelements, such as pumps, assuring the feeding in combustible to theburner in question.

My invention will be more readily understood by those skilled in the artin the following description when taken in connection with theaccompanying drawing forming part of this specification and in which thesingle figure represents a diagrammatic sectional view of my apparatus.

In the drawing 1 represents a burner and 2 a supply tank for fuel. Idispose in thefuel tank 2 a heating means such as an electricalresistance 3 and I control said electrical resistance 3 with athermostat 4: placing said electrical resistance in circuit when thecombustible contained in the fuel tank is not at a predeterminedtemperature which is the temperature for which the said thermostat hasbeen regulated and places the said resistance 3 out of circuit when saidpredetermined temperature has been attained.

In addition to the normal feed pipe 5 of the atomizer 6 of the burner 1leading to the fuel tank 2 I utilize a conduit 7 placing the saidatomizer 6 also in communication with the fuel tank 2 as shown and Icontrol the opening in said conduit 7 at the fuel tank end by means of acheck valve 8 adapted to respond: to the pressure existing in conduit 7,atomizer 6, conduit 5 and fuel tank 2.

I dispose in the fuel tank 2 a thermostat 9' opening the circuit to oneor more motors actuatingthe one or more pumps pumping the combustibleunder pressure into the fuei tank 2.

I preferably heat insulate the atomizer 6 or at least the rear partthereof.

The operation of my apparatus takes place as follows:

Suppose that it is desired to feed the burner l with fuel oil which, asis known in the art, has a certain viscosity when cold and consequentlyis atomized only with difliculty, and suppose it is desired to renderthe com- J ustible in question completely atomizable, and consequentlybring the same to a temperature which gives it the indispensablefluidity for a proper atomization, I regulate the thermostat 9 for theparticular temperature desired.

If all operates as desired, that is to say, if the combustible arrivesat the burner at the predetermined temperature the check 8 is on itsseat and the atomizer 6 is fed normally. If for some reason thetemperature of the combustible falls, the thermostat 9 opens the circuitto one or more of the motors actuating the one or more pumps feeding thefuel tank 2 with combustible under pressure.

The pressure in the system falls which system comprises the fuel tank 2,the conduit 5, the atomizer 6 the conduit 7, the check 8 opens the endof said conduit 7 and places thus the atomizer in short circuit. Theresistance 3 becomes hot and heats the combustible which rises in theconduit 5, passes through the atomizer 6 and by a thermosiphon effect ifeverything is in order returns to the fuel tank 2 and so on so long asthe combustible has not attained the desired temperature. WVhen saidtemperature is attained the thermostat 9 replaces in circuit'the one ormore motors actuating the pumps and the pressure existing anew the check8 falls back on its seat, closes the conduit 7 and the atomizer issuitably fed.

My invention thus prevents flooding of the the atomizer cannot operatepro mthro heating installation which takes place when =rly due to of thealaekoffluiditytotheproper combustible with which it 18 Having describedmy invention what I claim as new and desire to secure by Letters Patenti8- 7 installation for liquid com- .1. A heating bustibles havin a fueltank, a b rner,-an burner, and a feed pipe for h said feed PIE 2.heating insta tion for liquid combustibles ha a fuel tank, a burner, an

atomizer in sai burner, and a feed ipe for said fuel tank, thecombination 0 a pair of conduits interconnecting said burner and saidfuel tank, fpressure responsive means for closing one 0 said conduits,an electrical resistance for heating disposed in said fuel tank, athermostat in said fuel tank-adapted to control said heating resistanceand temrature nsive means di in said el tank a pted to control e supplyof combustible through said feed pigs.

3. A heating installation for quid combustibles havin a fuel tank, aburner, an atomizer in sai burner and a feed pipe for said fuel tank,the com ination of a pair of conduits interconnecting said burner andsaid fuel tank, presure res nsive means for closing one of saidconduits, heating means disposed in said fuel tank, temperature nsivemeans in said fuel tank adapted to control said heating means and athermostat in said fuel tank adapted to control the supply ofcombustible through said feed Pipe 5. A heating installationfor hqmdcombustibles having a fuel tank, a burner, an atomwar in said urner, anda feed pipe for said duits interconnecting said burner and'said fueltank, a" pressure responsive check valve for closing one of saidconduits, heating means disposed in said fuel-tank, temperatureresponsive means in said fuel tank adapted to control said heating meansand temps; ature responsive means disposed in tank adatptzl to control.the supply of combustible 'ugh said feed pipe. 6. A heatinginstallation for liquid combustibles havin a fuel tank, atomizer in saiburner and a feed pipe for said fuel mm, the combination'of a pair ofconduits interconnecting said burner and said fuel tank, a pressureresponsive check valvefor closing one of said-conduits, an electricalresistance for heating disposed in said fuel tank, a thermostat in saidfuel tank adapted to control said heating resistance and tema burner, an

rature nsive means in said ffiel to control e supply of 8. A heatinginstallation for liquid combustibles ha a fuel tank, a burner, an

atomizer in sai burner, and a feed pipe for said\fuel tank, thecombination of a-pair of conduits interconnecting said burner and saidfuel tank, a premlre responsive check valve for closing one of saidconduitsfan electrical resistance for heating dis in said fuel tank, athermostat in said fuel tank adapted to control said heating resistanceand a thermostat in said fuel tank adapted to control the supply ofcombustible through said feed pipe.

In testimony whereof I have afixed my sig-- nature.

ALFRED LANSER.

.fuel tank, the combination of a pair of connsive check valve

